It's "attempting to scope negotiations over its nuclear program as narrowly as possible."

"It is sticking to its refusal to acknowledge its past and recent weaponization-related work and demanding that its hollow claims that its program has been exclusively peaceful be accepted."

"A deal, as it is currently being framed and discussed, would fall short of the verified suspension and dismantling of Iran’s nuclear weapons program."

"It would allow Tehran to retain and continue developing its fissile material production capability and its delivery systems and effectively grant it a pass on its weaponization-related activities."

"It will put Iran's leaders in a position to rapidly cross the nuclear threshold at a time of their choosing, and it should be recognized for the bad deal that it is."

These type comments are spurious. They're reprehensible. They carry weight. They influence US foreign policy.

Nothing do more than Israeli Lobby pressure. AIPAC is its best known member. Washington bows to its will.

It's militantly hostile to Iran. On October 15, it headlined "Senators: Keep Pressure on Iran."

On October 11, 10 Republican and Democrat senators wrote Obama, saying in part:

"As representatives of the P5+1 and the Iranian government prepare to enter another round of negotiations to verifiably end Iran’s nuclear weapon program, we reiterate the four strategic elements articulated by 76 Senators to you on August 2, 2013 necessary to achieve resolution of the nuclear issue: (1) an explicit and continuing message that we will not allow Iran to acquire a nuclear weapons capability, (2) a sincere demonstration of openness to negotiations by Iran, (3) the maintenance and toughening of sanctions, and (4) a convincing threat of the use of force."

"Iran's first confidence-building action should be full cooperation with the International Atomic Energy Agency, fulfillment of its responsibilities under the Nuclear Nonproliferation Treaty, and implementation of all Resolutions passed by the United Nations Security Council regarding Iran’s nuclear weapons program, to include immediate suspension of all enrichment activity."

"(W)e reaffirm that a credible military threat remains on the table and we underscore the imperative that the current sanctions be maintained aggressively, and call on you to increase pressure through sanctions already in place."

"As we previously cautioned, Iran has historically used negotiations to affect progress on its nuclear weapons program."

"We must continue to realistically evaluate Iranian intentions, and we reiterate that the centrifuges cannot be allowed to continue spinning."

"We reject Iranian statements that Iran should be able to continue enrichment in its own territory."

"We remind you that the US Department of State has characterized Iran as 'the most active state sponsor of terrorism' and to be sure, verifiable dismantlement of the Iranian nuclear weapons program will not resolve the Iranian government's deplorable abuse of basic human rights, denial of basic civil freedoms, or its ongoing activities that seek to destabilize the region."

These type comments are irresponsible, abhorrent, totally out of line, and predictable. They repeat with disturbing regularity. They show what enormous challenges Iran faces.